CluesUnited States1926–1943221 issues
CL#V37N02 (1937-January)#V37N02 (1937-January)
- CL#V37N03 (1937-February)
#V37N03 (1937-February)
- CL#V37N04 (1937-March)
#V37N04 (1937-March)
- CL#V37N05 (1937-April)
#V37N05 (1937-April)
- CL#V37N06 (1937-May)
#V37N06 (1937-May)
- CL#V38N01 (1937-June)
#V38N01 (1937-June)
- CL#V38N02 (1937-July)
#V38N02 (1937-July)
- CL#V38N03 (1937-August)
#V38N03 (1937-August)
- CL#V38N04 (1937-September)
#V38N04 (1937-September)
- CL#V38N05 (1937-October)
#V38N05 (1937-October)
- CL#V38N06 (1937-November)
#V38N06 (1937-November)
- CL#V39N01 (1937-December)
#V39N01 (1937-December)